That's not a valid OBD-II code. If you mean P0101, that would seem to
indicate a failed MAF sensor(signal out of range for > 4.0 seconds).
Could be a dirty sensor, or bad wiring. I'd check the plug/wiring
first and see if you find any damage to the wires near the plug. If
not, I've had some success using brake cleaner on the wires of a 'hot
wire' MAF sensor. There are several kinds of MAF sensors out there
though, and without any specifics on which year/model you have it is
hard to tell if cleaning will work or if you need to find another
sensor.
Keep in mind that an OBD-II code indicates a problem being observed in
a CIRCUIT, not necessarily a SENSOR.
Chris